-typedef enum { MED_DRIVER = 0, GIBI_DRIVER = 1, PORFLOW_DRIVER = 2, VTK_DRIVER = 254, NO_DRIVER = 255 } driverTypes;
+typedef enum { MED_DRIVER = 0, GIBI_DRIVER = 1, PORFLOW_DRIVER = 2, VTK_DRIVER = 254, ASCII_DRIVER = 3, NO_DRIVER = 255 } driverTypes;